Hair brush



FIG. 1 is a perspective view of a hair brush showing a new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof, the rear being a mirror image;

FIG. 4 is a right side elevational view thereof, the left side being a mirror image;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a hair brush, as shown and described. 